Keyword Analysis & Research: mitosis definition stages

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What are the four phases of mitosis?

Mitosis is separated into four stages that separate and divide all of the genetic material necessary to make a new cell. The stages are prophase, metaphase, anaphase, and telophase. A normal human cell has a total of 46 single chromosomes. They appear as a single rod and are usually in a loose mass inside of the nucleus of a cell.

What happens during each stage of mitosis?

First phase of mitosis in which duplicated chromosomes condense and spindle fibers begin to form. Second phase of mitosis in which the chromosomes line up across the center of the cell. Third phase of mitosis in which the chromosomes separate and move to opposite ends of the cell.

What happens during the prophase stage of mitosis?

Prophase is the first step of mitosis. This is when the genetic fibers within the cell’s nucleus, known as chromatin, begin to condense and become tightly compacted together. During interphase, the parent cell’s chromosomes are replicated, but they aren’t yet visible. They’re just floating around in the form of loosely collected chromatin.

How is cytokinesis involved in the stages of mitosis?

Cytokinesis is the division of the cell's cytoplasm. It begins prior to the end of mitosis in anaphase and completes shortly after telophase/mitosis. At the end of cytokinesis, two genetically identical daughter cells are produced. These are diploid cells, with each cell containing a full complement of chromosomes.

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